Home / 315,337,440.40-472,684,234.20-213,111,811.60

Finding the Fourth Proportional to 315,337,440.40, 472,684,234.20 and 213,111,811.60

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Solution

The fourth proportional to 315,337,440.40, 472,684,234.20 and 213,111,811.60 is: 319,450,152.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,337,440.40 : 472,684,234.20 = 213,111,811.60 : x
  2. Step 2: Convert to fraction form
    315,337,440.40/472,684,234.20 = 213,111,811.60/x
  3. Step 3: Cross multiply
    315,337,440.40x = 472,684,234.20 × 213,111,811.60
  4. Step 4: Simplify right side
    315,337,440.40x = 100,734,593,465,120,672
  5. Step 5: Solve for x
    x = 100,734,593,465,120,672/315,337,440.40
  6. Step 6: Final answer
    x = 319,450,152.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.